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14 Cards in this Set
- Front
- Back
- 3rd side (hint)
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What is the advantage of using anelectronic air filter?
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1. Cleaner house
2. healthier environment |
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Is the electronic air filter installed in the supply are return plenum? |
Supply |
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What causes the dust particles to stick to the plates in the electronic air filter? |
Ionized air |
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How many volts do the grid wires in the electronic filer receive and is it AC or DC volts? |
12,000 Volts |
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How is the electronic air filter cleaned? |
Luke warm water & Mild detergent |
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What are four common methods central AC manufactures use to increase the SEER to 15 on their condensing units? |
1. Increase the size of condenser or evap
2. 410 A Refrigerant 3. Using TXV for metering device 4. Scroll compressor |
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What type of metering device is normally used with 410A refrigerant? |
TXV |
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How much more efficient is the scroll compressor compared to the reciprocating compressor? |
10%
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What type of blower motor is used with the scroll compressor to increase the SEER above 16? G |
1. 2. Two stage scroll 3. Multiple compress 4. Variable speed compressor |
1,Vsbm. 2, Ts 3, Mc 4, VSC |
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How is the SEER number raised above 18 on air conditioners? |
Capacity of the compressor MUST be controlled |
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What are three types of compressors used to control capacity of the air conditioner? |
1. Multiple 2. Two staged 3. Variable speed |
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What is the component called that recovers the heat and moisture so the fresh air brought in from the outside doesn’t have to be cooled or heated as much? |
???? |
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What is the recommended air change in a residential home? |
.35 per hour
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How is zoning accomplished on central air conditioners?
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By controlling the VOLUME of air in particular zones of the house. |
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